Service Guide
29
U22
Yellow Toner Missing Reseat Toner
U22-Yellow Toner Missing
U23
Magenta Toner Missing Reseat Toner
U23-Magenta Toner Missing
U24
Cyan Toner Missing Reseat Toner
U24-Cyan Toner Missing
U25
Black Toner Missing Reseat Toner
U25-Black Toner Missing
1. Inspect the toner cartridge sensor flag. Ensure to moves properly and is
not broken.
2. Test the sensor using the test described in “Switch scan test” on page 63.
3. Inspect he toner sensor boards wiring harness.
4. Replace the toner sensor board.
5. Replace the engine control board.
U26
Yellow Drum Error U26 Power Off/On
U26-Yellow Drum Error
U27
Magenta Drum Error U27 Power Off/On
U27-Magenta Drum Error
U28
Cyan Drum Error U28 Power Off/On
U28-Cyan Drum Error
U29
Black Drum Error U29 Power Off/On
U29-Black Drum Error
1. Remove and install the drum unit.
2. Inspect the spring-loaded drum unit contacts (in a set of three). Ensure
they are clean and move up and down freely. Remove the assembly and
reseat it, if necessary.
3. Install a new drum unit.
4. Replace the engine controller board.
5. Replace the print unit chassis.
Printer fault messages
Code
Front panel message
Service message
Summary of Contents for 1235N - Phaser Color Laser Printer
Page 14: ...xiv Phaser 1235 Network Color Printer ...
Page 34: ...20 Phaser 1235 Network Color Printer ...
Page 78: ...64 Phaser 1235 Network Color Printer ...
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Page 203: ...Service Guide 189 Figure 1 Cabinet FRUs ...
Page 205: ...Service Guide 191 Figure 2 Top cover FRUs ...
Page 207: ...Service Guide 193 Figure 3 Printer chassis FRUs 1 of 2 ...
Page 209: ...Service Guide 195 Figure 4 Printer chassis FRUs 2 of 2 ...
Page 211: ...Service Guide 197 Figure 5 Paper tray FRUs ...
Page 213: ...Service Guide 199 Figure 6 Paper tray guide FRUs ...
Page 215: ...Service Guide 201 Figure 7 Multi sheet bypass feeder FRUs ...
Page 217: ...Service Guide 203 Figure 8 Electrical components FRUs ...
Page 219: ...Service Guide 205 Figure 9 Duplexer unit ...
Page 221: ...Service Guide 207 Figure 10 LowerTray Assembly FRUs ...
Page 229: ...Service Guide 215 Wiring Diagram Wiring diagram part 1 of 3 ...
Page 230: ...216 Phaser 1235 Network Color Printer Wiring diagram part 2 of 3 ...
Page 231: ...Service Guide 217 Wiring diagram part 3 of 3 ...
Page 233: ...Service Guide 219 Wire routing at the top of the engine controller board Tie wrap ...
Page 234: ...220 Phaser 1235 Network Color Printer Detail of wiring passthru ...
Page 236: ...222 Phaser 1235 Network Color Printer ...
Page 237: ...NOTES ...
Page 238: ...NOTES ...
Page 239: ...NOTES ...
Page 240: ...NOTES ...